Technology research and test verification of distributed flow regulator for inlet test in wind tunnel
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摘要: 分布式流量调节将风洞试验中的进气道出口后的流动转化为多个区域的流动，通过调整导流片组合之间的相对位置，改变导流片组合之间不同区域的流通面积，实现流体流量的调节。利用商业软件对节流锥流量调节与测量装置简化模型和分布式流量调节与测量装置简化模型进行了数值模拟，并在FL-24风洞对分布式流量调节方法进行了验证。研究结果表明：分布式流量调节具有较高的流通能力和调节效率，能够有效降低流量调节与测量装置的外形尺寸；进气道喘振前，分布式流量调节与节流锥调节的试验结果一致性较好；分布式流量调节分解了调节装置对上、下游流动的干扰，特别是对上游流动均匀性基本没有影响。Abstract: The downstream flow of inlet model can be translated into multiple regions by the distributed flow regulator which is composed of two sets of guide vanes. The mass flow is regulated by adjusting the relative position which changes the flow area between the two sets of guide vanes. Two simplified models of the distributed regulator and throttle cone are simulated by commercial software and improved in FL-24 wind tunnel. It is shown that the distributed regulator owns good flow and regulating capacities. Owing to the technology of distributed flow regulator, the size of the flow-meter can be decreased. The results from the distributed regulator are in good agreement with ones from the throttle cone when there is no surge emerging. Also it has little effect on the whole flow field, especially on the upper flow.
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Keywords:
- inlet /
- distributed /
- flow regulation /
- numerical simulation /
- wind tunnel test
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图 5 Ma=0.9时节流锥简化模型大流量调节位置Ma数分布
Fig. 5 Mach distribution of large flow for throttle cone model at Ma=0.9
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图 6 Ma=0.9时分布式简化模型大流量调节位置Ma数分布
Fig. 6 Mach distribution of large flow for distributed regulator model at Ma=0.9
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图 7 Ma=0.9时节流锥简化模型大流量调节位置总压分布
Fig. 7 Total pressure distribution of large flow for throttle cone model at Ma=0.9
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图 8 Ma=0.9时分布式简化模型大流量调节位置总压分布
Fig. 8 Total pressure distribution of large flow for distributed regulator model at Ma=0.9
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图 9 Ma=0.9时节流锥简化模型中等流量调节位置Ma数分布
Fig. 9 Mach distribution of medium flow for throttle cone model at Ma=0.9
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图 10 Ma=0.9时节流锥简化模型小流量调节位置Ma数分布
Fig. 10 Mach distribution of light flow for throttle cone model at Ma=0.9
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图 11 Ma=0.9时分布式简化模型小流量调节位置Ma数分布
Fig. 11 Mach distribution of light flow for distributed regulator model at Ma=0.9
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图 12 Ma=1.5时分布式简化模型小流量调节位置Ma数分布
Fig. 12 Mach distribution of light flow for distributed regulator model at Ma=1.5
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图 13 分布式流量调节验证总体技术方案
Fig. 13 General technical scheme of distributed regulator verification
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图 14 Ma=0.9时不同调节方式试验结果对比
Fig. 14 Comparison of test results of different regulation mode at Ma=0.9
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图 15 Ma=1.2时不同调节方式试验结果对比
Fig. 15 Comparison of test results of different regulation mode at Ma=1.2
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图 16 Ma=2.0时不同调节方式试验结果对比
Fig. 16 Comparison of test results of different regulation mode at Ma=2.0
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图 17 Ma=0.9时不同调节方式进气道出口压力云图比较
Fig. 17 Cloud chart comparison of inlet pressure for different regulation mode at Ma=0.9
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图 18 Ma=2.0时进气道喘振后不同调节方式压力云图比较
Fig. 18 vCloud chart comparison of inlet surge emerging for different regulation mode at Ma=2.0
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图 19 Ma=2.0时重复性试验结果曲线
Fig. 19 Repeatability test result curve of distributed regulator at Ma=2.0
表 1 压力边界条件
Table 1 Pressure boundary conditions
Ma 0.6 0.9 1.2 1.5 2.0 2.5 p02/kPa 100 105 120 120 155 163 pw/kPa 84 70 56 39 28 19 
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